4951.35
Elevated and subway structures must not obstruct travel or impair streets.

Elevated structures and crossings referred to in section
4951.34 of the Revised Code shall
be of such height and construction as not to prevent substantially the ordinary
use of, and traffic upon, roads, streets, alleys, ways, or grounds, whether by
pedestrians, vehicles, streetcars, or otherwise, except temporarily when
necessary in the construction of the elevated structures and crossings. Tunnels
for elevated railroads, or subways for underground railroads shall be
constructed as not to impair the stability of the roads, streets, alleys, or
public grounds, or prevent the use of any sewers, street railway tracks and
appliances, pipes, wires, and conduits used for any purpose in the streets,
alleys, ways, or grounds except temporarily when necessary in the construction
of the tunnels or subways, except as provided in sections 4951.35 to
4951.38, inclusive, of the Revised
Code. Such elevated structures, crossings, tunnels, and subways shall be
constructed in accordance with general plans approved by the director of public
service of the city. All such work of construction shall be subject to the
supervision and control of the director of public service.